Disable NSService context menu for multiple files selected in Finder

Question

I use a NSService for my application: the user runs it from the Finder context menu. I need to disable this NSService's context menu button for multiple selections.

Is this possible?

Answer 1

It is not possible. As the documentation says, possible values for the NSTextContent key are URL, Date, Address, Email, or FilePath - neither allows to specify any filter.